Número repetido Ejercicio VB.Net - Curso de Programación Visual Basic

' Import the System namespace to use Console classImports System
Public Class exercise29
    Public Shared Sub Main()
        Dim num, amount As Integer
        Dim i As Integer
        Console.Write("Enter a number: ")
        num = Convert.ToInt32(Console.ReadLine())
        Console.Write("Enter an amount: ")
        amount = Convert.ToInt32(Console.ReadLine())

        For i = 0 To amount - 1
            Console.Write(num)
        Next

        Console.WriteLine()
        i = 0

        While i < amount
            Console.Write(num)
            i += 1
        End While

        Console.WriteLine()
        i = 0

        Do
            Console.Write(num)
            i += 1
        Loop While i < amount
    End Sub
End Class